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code402 IBAN Validator
x402
code402 IBAN Validator is a paid API for AI agents from hcrb.in, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).
Validates and checksums International Bank Account Numbers (IBANs) using offline deterministic logic, returning validity, reason, country, and normalized form — paid per call via x402 USDC micropayment.
Price / call$0.005
Success—
StatusUnknown
How this service works
Offline deterministic checks (no ML, no scraping) for business identifiers and rental due-diligence, paid per call via x402 (gasless EIP-3009 USDC on Base). Checksum-verifiable (IBAN, LEI, VAT, ABA, ISBN, SEDOL…) vs format-only (EIN, IFSC, SWIFT/BIC…) — every response returns a scope field. Non-custodial, signed receipts. First 3 calls/day free.
Output
A JSON object with: `valid` (boolean indicating checksum/format pass), `reason` (human-readable explanation of the outcome), `country` (ISO country code extracted from the IBAN), `normalized` (standardized IBAN string), `scope` (indicates whether checksum was verified or format-only was possible), and `tool` (identifier of the check performed).
Example use cases
Pre-payment IBAN verification
“Before I send this wire transfer, can you verify that DE89370400440532013000 is a valid IBAN? I need to confirm the checksum is correct and the country matches Germany.”
Rental application due diligence
“A tenant just submitted their bank details for direct debit — the IBAN is FR7630006000011234567890189. Can you run a deterministic check to confirm it's structurally valid and get the normalized form?”
Bulk onboarding data cleanup
“We received a supplier form with this IBAN: NL91ABNA0417164300 — please validate it and tell me if it passes the checksum so I can approve them in our accounts payable system.”
Technical details
Endpoint
POSThttps://hcrb.in/v1/tools/iban-check/call?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, offline IBAN checksum validation without relying on ML, external databases, or scraping — ideal for compliance workflows, rental due diligence, or payment pre-checks where you want cryptographically signed receipts and per-call micropayment pricing (first 3/day free). Prefer it over bank-API lookup services when you only need structural validity, not live account status.
Side effects
- Malformed or empty input returns valid=false with a descriptive reason string
- IBANs from unsupported or obscure countries may return scope=format-only rather than checksum
- Network or payment authorization failure (x402) prevents the call from executing
- Incorrect USDC wallet configuration blocks the micropayment and returns a 402 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"valid",
"reason"
],
"properties": {
"tool": {
"type": "string"
},
"scope": {
"type": "string"
},
"valid": {
"type": "boolean"
},
"reason": {
"type": "string"
},
"country": {
"type": "string"
},
"normalized": {
"type": "string"
}
}
},
"example": {
"valid": true,
"reason": "checksum valid"
}
}Tags
x402
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